Title :
The research on photovoltaic power flexible grid-connected in microgrid based on H∞ control
Author :
Peng Li ; Chengjia Liu ; Wanping Li ; Ziheng Yin ; Jianjie Chen ; Kaiwen Liu
Author_Institution :
State Key Lab. of Alternate Electr. Power Syst. with Renewable Energy Sources, North China Electr. Power Univ., Baoding, China
fDate :
Oct. 30 2012-Nov. 2 2012
Abstract :
With the increasing proportion of photovoltaic power in the microsource, the power quality problem brought by the dynamic process of grid-connected and off-grid cannot be ignored any more. Therefore, this paper puts forward a control method of photovoltaic power flexible grid-connected based on H∞ control. This method combines the photovoltaic power grid-connected filter model and the H∞ control principle based on model matching to design H∞ flexible grid-connected controller. The simulation result shows that under different conditions such as no-load and on-load, the controller can precisely control photovoltaic port voltage to achieve seamless grid connection of the photovoltaic. This controller has the advantages of good dynamic performance and stability.
Keywords :
H∞ control; distributed power generation; photovoltaic power systems; power generation control; H∞ control; H∞ flexible grid-connected controller; dynamic process; microgrid; microsource; model matching; off-grid cannot; photovoltaic port voltage; photovoltaic power flexible grid-connected; photovoltaic power grid-connected filter model; power quality problem; Circuit stability; Integrated circuit modeling; Photovoltaic systems; Power system stability; Stability analysis; H∞ control; flexible grid-connection; microgrid; model matching; photovoltaic;
Conference_Titel :
Power System Technology (POWERCON), 2012 IEEE International Conference on
Conference_Location :
Auckland
Print_ISBN :
978-1-4673-2868-5
DOI :
10.1109/PowerCon.2012.6401414
